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    自定义代码块<br>
    file->首选项-》用户代码块->选择一个文件,html<br>
    <xmp>
        "http jsuser":{
            "prefix":"js",
            "body":[
                "<script>\r\n\t$1",
                "</script>",
            ],
            "description": "JavaScript初始化模板"
        }
    </xmp>
    录制视频时字体18，页面400%<br>
    git,第3个图标，先加号+，再对号√，在三点推送<br>
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